[tor-bugs] #14847 [Tor]: Controller: add a command to fetch HS descriptor from HSdir(s)

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#14847: Controller: add a command to fetch HS descriptor from HSdir(s)
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     Reporter:  dgoulet      |      Owner:  dgoulet
         Type:  enhancement  |     Status:  needs_review
     Priority:  normal       |  Milestone:  Tor: 0.2.7.x-final
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:  SponsorR tor-hs controller
Actual Points:               |  Parent ID:  #3521
       Points:               |
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Comment (by atagar):

 {{{
 DescId = 32*Base32Character
 }}}

 Out of curiosity where do hidden service descriptor ids reside? That is to
 say, what are the use cases where someone will have one of these ids and
 want to look it up?

 -----

 {{{
 TimePeriod = Specified in rend-spec.txt section 1.3.
 }}}

 Please say what this actually is. I'm sure it's discussed in there, but
 it's actually not a well defined field in the rend-spec...

 {{{
 % grep TimePeriod rend-spec.txt | wc -l
 0
 }}}

 -----

 {{{
 + It is also possible to specify a TimePeriod and/or a Replica value for
 an
 + HSAddress. They can't be used with a DescId because they are part of a
 + descriptor id for an HSAddress. A 552 error is returned in that case.
 }}}

 Admittedly I'm not overly familiar with hidden services, but I'm not sure
 what this paragraph means or what the fields do.

 ----

 {{{
 + Examples are:
 + C: HSFETCH v2-gezdgnbvgy3tqolbmjrwizlgm5ugs2tl
 + S: 250 OK
 }}}

 Oh, I appreciate the examples - thanks for including that!

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/14847#comment:19>
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